Objectives & Methods : This study aimed to investigate the diagnostic value of the cervical lymph node in the application of large intestine tonification of Sa-Am acupuncture. Results & Conclusions : Cervical lymph node appeared in 76% of the cases for which large intestine tonifying Sa-am acupuncture was used in ${ulcorner}$Sa-Am-Do-In-Chim-Gu-Yo-Kyul(舍岩道人鍼灸要訣)${urcorner}$. We suggest that cervical lymph node can be used as an important diagnostic point for the application of large intestine tonification of Sa-Am acupuncture.